Sample # Population 1 Population 2

1 3,738 3,885

2 3,559 3,786

3 3,658 4,126

4 3,692 4,209

5 3,809 4,425

6 3,748 3,895

7 3,888 4,048

8 3,979 4,151

9 3,514 3,893

10 3,729 3,885

11 4,104 4,683

12 3,857 4,171

13 3,620 4,016

14 3,947 4,061

15 3,752 4,393

The paired samples shown in the accompanying table have been obtained from normally distributed populations. Construct a 95

95% confidence interval estimate for the mean paired difference between the two population means.

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Let mu

dequals

=mu

1minus

mu

2. Construct a 95

95% confidence interval estimate for the mean paired difference between the two population means.

nothing

less than or equals

mu Subscript d

dless than or equals

nothing

(Round to four decimal places asneeded.)